Using MediaWiki 1.17.0 I get a "Fatal error: Class 'RequestContext' not found in /var/www/wiki/extensions/PageInCat/PageInCat_body.php on line 231
" with the extension installed whenever I try to preview any edit on any page (doesn't matter if it uses {{#incat: or not). I can still save page edits. Other than that the extension works great.
This post was posted by Peachey88 (Flood), but signed as Ned Scott.